verb (used with object)
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to communicate with (a person) or search for information about (a person) by using Facebook.
My old girlfriend just facebooked me.
His future employer Facebooked him and decided to withdraw the job offer.
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to post on Facebook.
I facebooked some photos of my cat.
You should Facebook the event so more people will show up.
verb (used without object)
noun
verb
Spelling
The official trademarked name of the social media platform and website is now styled in all capital letters “FACEBOOK,” though prior to 2020 the trademarked style was “facebook,” in all lowercase letters. Formal writing—as exemplified by most news and book publishers—treats such names as regular proper nouns, in this case “Facebook,” using an initial capital letter, but not all caps. However, when a trade name begins with a lowercase letter followed by an uppercase one, such as eBay or iPad, this spelling is retained, even at the beginning of a sentence.
Etymology
Origin of Facebook
First recorded in 2000–05; from facebook, a college student directory with personal photos and basic information
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
On Friday the UK's advertising watchdog warned claims in adverts for some portable air conditioning units, shown on Facebook and YouTube, were "too good to be true".
From BBC • Jul. 10, 2026
The regulators are also still investigating what they refer to as the “rabbit hole” effects of Facebook and Instagram’s algorithm-based recommender systems, which they say may exploit children’s vulnerability.
From The Wall Street Journal • Jul. 10, 2026
"Although the typhoon has weakened slightly and is now classified as a moderate typhoon, its extensive wind field may still bring strong winds and heavy rain to various areas," Lai said on Facebook.
From Barron's • Jul. 10, 2026
In a Facebook post, external he said that he would fight for more policing in the town, more investment in jobs and champion farming and tourism.
From BBC • Jul. 10, 2026
Aunt J is scrolling through her Facebook feed, hyped about the fact that the number of counterprotesters has grown.
From "Split the Sky" by Marie Arnold
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
